用不同的方式从列表中删除重复项

我有一个名为employee的类，它是pojo，并且我创建了该pojo类型的employee类型的列表。现在我想从列表中删除重复项，请告知实现这一目标的各种方法是什么。

class Emp implements Comparable
{
      String name,job;
      int salary;
      public Emp(String n,String j,int sal)
      {
         name=n;
         job=j;
         salary=sal;
       }
      public void display()
      {
        System.out.println(name+"\t"+job+"\t"+salary);
       }
      public boolean equals(Object o)
      {
          Emp p=(Emp)o;
          return this.name.equals(p.name)&&this.job.equals(p.job)           &&this.salary==p.salary;
       }
       public int hashCode()
       {
          return name.hashCode()+job.hashCode()+salary;
       }  
       public int compareTo(Object o)
       {
          Emp e=(Emp)o;
          return this.name.compareTo(e.name);
           //return this.job.compareTo(e.job);
          // return this.salary-e.salary;

        }
} 

这是我的员工类型列表..

import java.util.*;
class EmpListDemo
{
      public static void main(String arg[])
      {
          ArrayList list=new ArrayList();
          list.add(new Emp("Ram","Trainer",34000));
          list.add(new Emp("Sachin","Programmer",24000));
          list.add(new Emp("Priyanka","Manager",54000));
          list.add(1,new Emp("Ravi","Administrator",44000));
                 list.add(new Emp("Ram","Trainer",34000));
          list.add(new Emp("Anupam","Programmer",34000));
list.add(new Emp("Sachin","Programmer",24000));
          list.add(new Emp("Sachin","Team Leader",54000));
          System.out.println("There are "+list.size()+" elements in the list.");
          System.out.println("Content of list are : ");
          ListIterator itr=list.listIterator();
          while(itr.hasNext())
          {
            Emp e=(Emp)itr.next();  
            e.display();
          }   

}
}

要从数组列表中删除重复元素，您应该考虑使用哈希集，因为它们不允许重复。

// Declare your reference variables
ArrayList list = new ArrayList();
HashSet hashSet = new HashSet();

// Put all list elements into hashset
hashSet.addAll(list);
list.clear();
list.addAll(hashSet);